In 1972
J.D. Paulson worked on patenting an improved internal combustion rotary
motor. This diagram shows Paulson's sketch of the motor and notes
on its functioning. The elements he noted as being unique to his design
were two elliptical channels, centrifugal sweepers, interchange of
gaseous fuel between channels, and simultaneous firing on the sides
opposite the center.

Click on above image to
see notes.

In
1959, Jehu Dewitt Paulson was awarded a design patent for his design of
an elevated storage tower for use with granular or other gravitationally
fluid material. This notice from the U.S. Patent Office declares its approval
and the issuance of a Design Letters Patent.